Thesium bathyschistum Schltr.

Stems erect, about 9 in. high, branched in the upper part, glabrous; branches erect; lower leaves acicular, subterete, obtuse, 3/4-1 1/3 lin. long, 1/2 lin. thick, fleshy, glabrous; flowers arranged in short dense capitate or subcapitate spikes; heads composed of 3-flowered cymes; bracts lanceolate or a few of the lower ovate-lanceolate, with subacute often blackish tips, 2-3 lin. long, rather sharply keeled, with slightly membranous entire margins, glabrous; bracteoles linear or linear-lanceolate, acute, usually nearly as long as the bracts; perianth 1 3/4 lin. long, with a ring of hairs in the throat; segments linear or linear-lanceolate, subacute, hooded, 1 1/2 lin. long, with a beard of stout stiff hairs within the hood, and hairy margins, and a ring of short hairs at the throat of the tube; anthers exserted, inserted at the base of the perianth-segments, 1/4 lin. long; stigma sessile; fruits subglobose, capped by the long persistent perianth, 2 1/2 lin. long, distinctly 10-ribbed, slightly reticulate between the ribs.